Years ago, when I worked in West Africa, my interpreter, a Mr. Dau, was, hands down, the most intelligent man I have ever known. He had graduated from several European universities, and could discuss anything you cared to discuss in any of five European languages. One day, in one of our many discussions, he so astounded me with his summation that I blurted out, "Mr. Dau, in my over fifty years living in the United States, I've never met an American black man with your level of intelligence.
In response, Mr. Dau replied with the question, "Why do you think we sold them to you?"